Load deflection characteristics of copper nickel titanium orthodontic Archwires
Keywords:
load deflection, copper nickel, titanium, orthodonticAbstract
Aim: The aim of this study was to evaluate and assess the force applied by a broad arch form orthodontic archwire on displaced teeth in ovoid arch form maxillary dentition. Materials and Methods: An in-vitro three-point test was devised to study force applied. An Ovoid form Maxillary pre-treatment model was selected at random. Right Lateral incisor and left second premolar teeth were trimmed out to simulate deflected teeth. Three different brands of wires were evaluated. The wires were divided into four groups. Each group had 10 wires for testing. The testing was done in both sites. ANOVA test was done to compare the mean force levels. Results: The lowest force level at 0mm deflection was recorded at 1.27gf and the highest force level at 4mm was recorded at 355.88gf. Conclusion: The forces applied were low and there was no significant difference in the force levels among the groups.
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